Moog RK623724 Suspension Control Arm and Ball Joint Assembly - Front Left Lower Rearward

Front Left Lower Rearward Control Arm

Restore precise suspension geometry with this Moog suspension control arm and ball joint assembly, part number RK623724. It is built for the front left lower rearward position on select Audi A4, A4 allroad, A4 Quattro, A5, A5 Sportback, S4, S5, RS5, and RS5 Sportback applications.

Moog RK623724 is a premium replacement for Audi front suspension service, with a control arm design that includes the ball joint and bushings for a complete repair at the specified position. It is engineered for structural strength and corrosion protection to support long-term durability in daily driving conditions.

• Premium-grade suspension control arm and ball joint assembly
• Ball joint included for the front left lower rearward location
• Bushings included for a more complete suspension service
• Engineered for structural strength and corrosion protection
• Direct replacement for select Audi front suspension applications

Vehicle Fitment

• Fits 2017-2025 Audi A4 allroad, front left lower rearward.
• Fits 2016-2025 Audi A4 Quattro, front left lower rearward.
• Fits 2018-2025 Audi A5 Quattro, front left lower rearward.
• Fits 2018-2025 Audi A5 Sportback, front left lower rearward.
• Fits 2021-2025 Audi RS5 Sportback, front left lower rearward.
• Fits 2019 Audi RS5 Sportback, front left lower rearward.
• Fits 2018-2025 Audi S4, front left lower rearward.
• Fits 2018-2025 Audi S5, front left lower rearward.
• Fits 2018-2025 Audi S5 Sportback, front left lower rearward.
• Fits 2021-2024 Audi RS5, front left lower rearward.
• Fits 2018-2019 Audi RS5, front left lower rearward.
• Fits 2016-2020 Audi A4, front left lower rearward.

Common Repair Uses

• Front suspension noise from worn bushings or a loose ball joint
• Steering wander or reduced front-end stability
• Uneven tire wear caused by worn control arm components
• Clunking over bumps from suspension play at the lower rearward arm
• Restoring alignment control after front suspension wear

Installation Notes

Verify the vehicle’s year, model, and front left lower rearward position before installation. After replacement, a professional wheel alignment is recommended to confirm suspension geometry and steering response. This part cross-references Dorman OE Solutions 526-845 for the same application.

Quality Assurance

Moog premium control arms are engineered for foreign and domestic nameplates with an emphasis on structural strength and corrosion protection. Part number RK623724 is built as a premium suspension replacement for the listed Audi applications.